Electrical fitting.



Patented Nov. ESMF:

WILLIAM F. ANKLAM, 0F DETROIT, MICHIGAN, .ASSIGNOR TO C. M. lHALL LAMPCOMPANY, OF DETROIT, MICHIGAN, A CORPORATION OF MICHIGAN.

ELECTRICAL FITTING.

il ,116i ,582.

Specification of Letters Patent.

Application led September 8, 1914. Serial No. 860,660.

To all Uwmy t may concern.'

Be it known that I. IVILLTAM F. ANKLAM, a citizen of the United Statesof America, residing at Detroit, in the county of Wayne and State ofMichigan, have invented certain new and useful Improvements inElectrical Fittings, of which the following is a specification,reference being had therein to the accompanying drawings.

The invention relates to electrical fittings and more particularly to asocket fitting adaptrd for the reception of a lamp and connector plugfor use in vehicle laanps and similar structures.

In the drawings, Figure l is a perspective view; Fig. 2 is alongitudinal section; and Fig. 3 is a cross-section on the line 3-3 ofFig. Q.

In the construction of vehicle lalnps it is desirable and is required bythe laws of certain States to locate the switch for turning on and offthe light directly in thc lamp. Thus if the lamp Iis burned out orotherwise inoperative it is called to the attention of the operator whentheattempt is made to turn it on. With the present invention I have"provided a simple construction of socket for the lamp and connector plugwhich permits the latter to be used as a switch, the detail constructionbeing as follows: A is a metallic, cylindrical sleeve which is providedat opposite ends with bayonet joint slots B and C, also with thelongitudinal slots D on opposite sides of the central portion thereof.

E are annular spring abutments for fitting within the cylinder A andhaving projecting lugs E for engaging the longitudinal slots D.

F is a spring arranged between the abutments E and normally holding thesame at the opposite ends of the slots D.

G is the connector plug which is provided with an outer metallic casingG containing an insulator plug I-I carrying a yieldable contact memberI. The casing G. is provided with lugs or pins J for engaging thebayonet slots C and these slots are formed with two laterally-extendinglocking shoulders C and C2 for engaging the pins J and holding the plugin different positions of longitudinal adjustment. The lamp K is alsoprovided as usual with the ins K for engaging the bayonet joint slotsThe proportion of the parts just described is such that when the lamp isinserted in one end of the cylindrical socket A it will press againstthe abutment E, forcing the latter inward against the tension of thespring F before the lamp may be turned to lock upon the .shoulder of thebayonet slot. In the same manner the insertion of the plug Gr will bearupon the opposite spring abutment E,

forcing it in the oppositedirection against the tension of the spring F.Therefore the pins J may be engaged with either of the locking shouldersC or C2. `When the pins I are in engagement with the shoulder C( thecontact I will be separated from the cooperating contact L of the lamp,`but when the pin J is in engagement with the shoulder C2 the contact Iwill be pressed against the contact L, thereby completing the circuit.In both positions the plug G will be held from accidental displacementby the tension of the spring F andl this same spring forms also thetensioning means for holdin the lamp from disengagement. Thus with thissimple construction both lamp and connector are secured, and theconnector may be used as a switch for turning on or off the lamp.`

What I claim as my invention is ,f

1. An electrical fitting, comprising a c vlindrical casing adapted forreceiving a lamp and a connector plug respectively in opposite endsthereof, and formed to estab vlish two different spaced relationsbetween said lamp and plug, of a spring housed within the centralportion of said casing, and abutments at opposite ends of said springheld thereby in constant yieldable contact with said lamp and4 plugrespectively, and means independent of said abutments for 4establishingelectrical connection between the lamp and plug in one of their spacedrelations. a

2. An electrical fitting, comprising a cylindrical casing adapted forthe reception of a lamp and a connector plug in the opposite endsthereof, a spring housed within the central portion of said casing,sliding abutments at opposite ends of said spring, means for locking thelamp in said casing against the tension of'said spring, means forlocking said plug in two positions of longitudinal adjustment and eachunder the tension of said spring, and an electrical contact adapted tobe held in connection with the Patented Nov. 23, i915.

lamp Contactiin;one-position` of said plug and out of connectiontherewith in the other position. y

^ 3;'An electrical fitting, comprising a cylindrical casing adapted forthe reception of a lamp and a connector plug in opposite ends thereof, aspring housed in the intermediate portion of said casing, springabutments at opposite ends of said spring engaging said casing to formstops, a connector plug insertible in one end of said fitting,comprising an outer metallic sleeve, ank insulator plug therein, and ayieldable 4electrical contact member engaging said insulator, saidcasing being provided with bayonet joint slots at opposite yends thereoffor respectively locking said lamp and said plug, and the slots -forsaid plug being provided with two shoulders, one for holding saidelectrical ycontact out of connection with said lamp and the other forholding said contact in connection with said lamp.

4. An electrical fitting, comprising a cylindrical casing adapted forreceiving a lamp and a connector plug respectively in opposite endsthereof, a spring housed within the center portion of the casing, andabutments at opposite ends of said spring, held thereby in yieldablecontact with said lamp and plug and formed with portions slidablyengaging the casing 5. An electrical fitting, comprising a cylindricalcasing, a spring housed within the central portion of the same, slidingabutments for the opposite ends of the spring,

v'having their displacement limited through engagement with -the casing,a. lamp insertible 1n one end of the casing, interlocking with thecasing and contacting with the abutment in `said end, a plug insertiblein theother end of the casing, having two positions of interlockingengagement with the casing and contiguous in both of said positions withthe other abutment, electrical terminals lrespectively carried by thelamp and plug, and means for locking the plug in its two positions, saidterminals being in contact in one of the positions of the plug andspaced in the other.

6. An electrical fitting, comprising a cylindrical lcasing adapted forreceivingalamp and a connector plug respectively in its opposite ends, aspring housed within the center portion of the casing, and annularabutments at opposite ends of said spring, held thereby in yieldableengagement with the lamp and plu 7. An electrical fitting, comprising acylindrical open-ended casing, and a lamp and connector plugrespectively retained the ends of the casing, the plug having a portionestablishing direct electrical connection Wlith the lamp in a certainposition of said p ug.

8. An electrical fitting, comprising a cylindrical casing adapted forreceiving a lamp and a connector plug respectively in its opposite ends,a spring housed within the center portion of said casing, annularabutments at opposite ends of said spring, held thereby in yieldableengagement with the lamp and plug, the plug having a portion proJectingthrough the adjacent abutment for establishing electrical connectionwith the lamp.

9. Anelectrical fitting, comprising a cy lindrical casing adapted forreceiving a lamp and a connector plug respectively in its opposite ends,a spring housed within the center portion of said casing, annularabutments held by said spring in yieldable contact with the lamp andplug, and means for establishing an electrical connection between thelamp and plug through the apertures of the abutments.

In testimony whereof I aiix my signature in presence of two witnesses.

WILLIAM F. ANKLAM.

Witnesses HERBERT .APFELBAUM,. C. E. ALLEN.

